• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A drill chuck comprising a chuck body (5) and comprising a conical base-shaped clamping sleeve (2) which is rotatable about the chuck axis (6) of the chuck body (5). ) and whose rotation makes it possible to adjust a plurality of clamping jaws (3) with respect to the mandrel body (5). The clamping sleeve (2) is formed in two parts, with a metal conical outer sleeve (10) and a conical inner sleeve (11) made of plastic material, the outer sleeve (10) having on its inner periphery a cylindrical segment ( 12) for radial centering of the outer sleeve (10) on the inner sleeve (11). The invention also relates to a clamping sleeve and a method for producing a knurling on the clamping sleeve.
    公开号:FR3018212A1
    申请号:FR1551632
    申请日:2015-02-26
    公开日:2015-09-11
    发明作者:Peter Schenk
    申请人:Evonik Roehm GmbH；
    IPC主号:
    专利说明:

    [0001] The invention relates to a drill chuck comprising a chuck body and comprising a conical base-shaped clamping sleeve which is rotatable about the mandrel axis of the chuck body and is rotatable to adjust a plurality of clamping jaws with respect to the mandrel body. Such drill chucks are widely used in the state of the art, the clamping sleeve being always made of plastic. In the state of the art, steel clamping bushes with a metal outer surface are also known. Reference can be made to EP 0 785 041 A1 in which a drill chuck with a locking device has a two-piece clamping bush with a metal outer surface and an inner plastic surface. The outer surface and the inner surface both have a cylindrical base shape. The metal outer surface increases the resistance capacity of the drill chuck relative to external influences, while the inner surface made of plastic material allows in particular to provide low cost control cams for the locking device. In the state of the art, there is no known metal clamping bush having a conical base shape for keyless chucks that can be actuated without a wrench since the problem is in particular to be met by a reliable process on the contour of the clamping sleeve conicates a knurling necessary to increase the clamping force to be transmitted. The invention therefore aims to configure a drill chuck of the type described above, so that, while retaining a simple inner peripheral surface to be modified, the conical base shape can be obtained with the aid of a metallic material without impairing the drilling properties of the drill chuck.
    [0002] Another object is to indicate a method making it possible to achieve, by a reliable process, an impeccable knurling in the outer periphery of a conical clamping sleeve made of metal. This object is achieved, for the part relating to the drill chuck, with a drill chuck of the type described above, in that the clamping sleeve is formed in two parts, with a metal conical outer sleeve and a conical inner sleeve made of plastic, and that the outer sleeve has on its inner periphery a cylindrical segment for radial centering of the outer sleeve on the inner sleeve. This configuration has the advantage of not compromising the concentricity properties due to the correct alignment of the outer sleeve relative to the inner sleeve, thus to avoid unbalance by misalignment of the outer sleeve relative to the socket inside and with respect to the mandrel axis. Preferably, the cylindrical segment is provided twice and made on the edges of the outer sleeve. In this embodiment, the correct alignment of the outer sleeve and the inner sleeve relative to each other is provided by two cylindrical segments which are formed at the front edge and the rear edge to ensure the correct alignment over the entire axial extension. For reasons of cost and to simplify manufacture, it is advantageous for the cylindrical segment to be formed, at the level of the front axial edge, by an annular flange which is folded radially inwards and which engages in an annular groove made on the inner socket. It has furthermore been found effective in practice for the clamping jaws to be guided longitudinally in guide housings inclined with respect to the mandrel axis and to be engaged by means of external toothing. with an internal thread of a threaded ring that can be turned by the clamping sleeve.
    [0003] It is furthermore advantageous that control cams are provided on the inner surface of the inner sleeve to adjust the locking element and / or the latching element of a locking device whose structure is not described. here in detail since reference can be made to this subject in EP 0 785 41 A1 of the same applicant. In order to avoid damage when passing through a workpiece, a protective cap that forms an axial stop for the outer sleeve is rotatably mounted on the inner sleeve or mandrel body. In order to be able to apply a greater force to adjust the clamping sleeve and thus to open and close the drill chuck in the case of a keyless drill chuck, a knurling is performed on the peripheral surface of the bushing conical outer.
    [0004] Preferably, the knurling extends, at a certain distance from the edges, without axial interruptions on the central zone of the conical outer sleeve. It is also advantageous if the taper angle of the outer bushing is between 3 ° and 30 ° and in particular between 10 ° and 20 °, the choice of the taper angle being possible in particular in accordance with the configuration of the drill housing to which the drill chuck is associated. The design of the drill chuck can be adapted to the design of the drill. The conical outer surface also allows for better chip evacuation and drill dust since chips and dust are not guided to a front edge of the drill housing. The invention portion of the invention is solved by a method of making the knurling on the outer peripheral surface of a metal conical clamping sleeve for a drill chuck, the knurling tool being, when performing knurling, moved relative to the outer peripheral surface along a path that is not parallel to a line defined by the taper angle on the outer peripheral surface.
    [0005] In the opinion of the specialists, it was impossible, for geometrical and topological reasons, to make a "harmonious" knurling on a conical clamping sleeve by a reliable process, since the widening of the outer diameter of the outer sleeve causes irregular knurling. which is not acceptable for design reasons and is rejected by the customers. The method according to the invention offers for the first time the possibility of producing, on a metal conical clamping sleeve, a knurling having a visual appearance without knurling defects.
    [0006] It has proved advantageous in this regard that the difference between the angle of taper and the path is between 1 ° and 10 °, in particular between 2 ° and 5 °. The subject of the invention is also an outer bushing comprising a metal base body with a conical base shape, with a knurling on the outer peripheral surface, the notch depth of the knurled teeth constituting the knurling decreasing by one edge of the knurling. towards the other edge of the knurling. The invention is described below in more detail with the aid of an exemplary embodiment shown in the drawings; 1 is a perspective view of a first embodiment of the invention; FIG. 2 is a side view of the drill chuck of FIG. 1, shown in section on the left half; FIG. 3 illustrates the section of FIG. 2; FIG. 4 is a representation corresponding to FIG. 1 of another embodiment of the invention; FIG. 5 is a representation of the drill mandrel of FIG. 5 is a view corresponding to FIG. 2 of the drill chuck of FIG. 4; FIG. FIG. 8 illustrates another embodiment of a drill chuck according to the invention in a representation corresponding to FIG. 2, and FIG. 9 is a rear view of the drill chuck of FIG. embodiments of the invention shown in the drawings all have in common one to show a drill chuck 1 comprising a chuck body 5 and a chuck 2 rotatable about the chuck axis 6 of the chuck body, the chuck 2 having a tapered base shape. The rotation of the clamping sleeve 2 makes it possible, in the exemplary embodiments shown in the drawings, to adjust the clamping jaws 3 with respect to the mandrel body 5, the clamping jaws 3 being guided with longitudinal sliding in guide housings. inclined relative to the mandrel axis 6 and being engaged by an external toothing with an internal thread of a threaded ring 7 being rotatable by the clamping sleeve 2. The drill chucks 1 shown in the drawings have Moreover, a locking device whose structure of principle corresponds to that of the locking device 8 of the drill chuck described in EP 0 785 041 A1, to which reference may be made for the explanation of the locking device 8. This locking device 8 comprises in particular a locking element which cooperates with a toothing 16 of the mandrel body 5, which is arranged in an intermediate sleeve 9 connected to the threaded ring 7 and which is adjusted by control cams made on the inner surface of the clamping sleeve 2. A detent element, which serves to lock the locking element in the respective switching state, is also actuated by control cams on the inner surface of the clamping sleeve 2. It is essential for the understanding of the invention that the clamping sleeve 2 has a conical base shape. The clamping bushing 2 is furthermore formed in two parts, with a conical metal outer bushing 10 and a conical inner bushing 11 made of plastics material. The outer bushing 10 has on its inner periphery at least one cylindrical segment 12 for the radial centering of the outer bushing 10 on the inner bushing 11, which, in all the embodiments shown in the drawings, is provided twice, namely at the edge axially before and at the axially rear edge. The cylindrical segment 12 at the axially forward edge is formed by an annular flange 13 which is folded inwards and which engages in an annular groove 14 formed on the inner sleeve 11.
    [0007] A protective cap 15 is rotatably mounted on the mandrel body 5 (FIG. 2) or on the inner sleeve 11 (FIG. 6), which forms an axial abutment for the outer sleeve 10, so that this protective cap 15 is additionally used to fix the position of the outer sleeve 10.
    [0008] On the peripheral surface of the conical outer sleeve 10 is formed a knurling 4 which extends over the central zone from the edges without axial interruptions and, more specifically, without generating knurling defects. The taper angle of the outer sleeve 10 is between 3 ° and 30 °. In order to be able to correctly make the knurling 4 on the outer sleeve 10, a method is used according to which the knurling tool is, when making the knurling 4, moved relative to the outer peripheral surface along a path that is not parallel to a line defined by the taper angle on the outer circumferential surface. The difference between the taper angle and the path is between 1 ° and 10 °, in particular between 2 ° and 5 °. With this method, an outer sleeve 10 is obtained with a metal base body having a conical base shape, in which the knurling 4 formed on the outer peripheral surface is knurled teeth whose notch depth decreases by one edge. from the knurling 4 to the other edge of the knurling.
    权利要求:
    Claims (12)
    [0001]
    REVENDICATIONS1. A drill chuck comprising a chuck body (5) and comprising a conical base-shaped clamping sleeve (2) which is rotatable about the chuck axis (6) of the chuck body (5) and rotates allows a plurality of clamping jaws (3) to be adjusted with respect to the mandrel body (5), characterized in that the clamping sleeve (2) is formed in two parts, with a metal conical outer sleeve (10) and a conical inner sleeve (11) made of plastic, and in that the outer sleeve (10) has on its inner periphery a cylindrical segment (12) for radial centering of the outer sleeve (10) on the inner sleeve (11) .
    [0002]
    2. drill chuck according to claim 1, characterized in that the cylindrical segment (12) is provided twice and made on the edges of the outer sleeve (10).
    [0003]
    3. Drill chuck according to claim 1 or 2, characterized in that the cylindrical segment (12) is formed at the front axial edge by an annular flange (13) which is folded radially inwards and which engages in an annular groove (14) formed on the inner sleeve (11).
    [0004]
    Drill chuck according to one of claims 1 to 3, characterized in that the clamping jaws (3) are guided longitudinally in guide housings inclined with respect to the mandrel axis (6) and are engaged, via an external toothing, with an internal thread of a threaded ring (7) rotatable by the clamping sleeve (2).
    [0005]
    5. Drill chuck according to claim 4, characterized in that control cams are provided on the inner surface of the inner sleeve (11) to adjust the locking element and / or the locking element of a locking device.
    [0006]
    6. Drill chuck according to one of claims 1 to 5, characterized in that on the inner sleeve (11) or the demand body (5) is rotatably mounted a protective cap (15) which forms an axial abutment for the outer sleeve (10).
    [0007]
    7. drill chuck according to one of claims 1 to 6, characterized in that a knurling (4) is formed on the peripheral surface of the conical outer sleeve (10).
    [0008]
    8. drill chuck according to claim 7, characterized in that the knurling (4) extends at a distance from the edges, without axial interruptions on the central zone of the conical outer sleeve (10).
    [0009]
    9. Drill chuck according to one of claims 1 to 8, characterized in that the taper angle of the outer sleeve (10) is between 3 ° and 30 ° and in particular between 10 ° and 20 °.
    [0010]
    Method for producing the knurling on the outer circumferential surface of a metal conical clamping sleeve (10) for a drill chuck, characterized in that the knurling tool is, when making the knurling (4) moved relative to the outer peripheral surface along a path that is not parallel to a line defined by the taper angle on the outer peripheral surface.
    [0011]
    11. The method of claim 10, characterized in that the difference between the taper angle and the path is between 1 ° and 10 °, in particular between 2 ° and 5 °.
    [0012]
    Clamping bush comprising a conical base-shaped metal base body with a knurling (4) formed on the outer peripheral surface, characterized in that the notch depth of the knurled teeth constituting the knurling (4) decreases by one edge of the knurling to the other edge of the knurling.
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US896051A|1906-01-06|1908-08-11|Frank M Ashley|Drill-chuck.|
    US2381113A|1943-02-01|1945-08-07|George W Cook|Blind rivet|
    GB1565048A|1975-10-07|1980-04-16|Jacobs Mfg Co|Drill chucks|
    US4275893A|1979-08-31|1981-06-30|Black & Decker Inc.|Self-tightening keyless chuck|
    AT21144T|1981-10-29|1986-08-15|Bmt Bygningsautomatic As|APPROXIMATELY ARC-SHAPED, TRANSPARENT WALL OF SWIVEL DOORS.|
    DE3280455T3|1981-11-04|2000-07-13|Kanegafuchi Chemical Ind|Flexible photovoltaic device.|
    DE4313742C2|1993-04-27|2000-10-05|Roehm Guenter H|Drill chuck|
    US5503409A|1993-12-15|1996-04-02|Roehm; Guenter|Self-tightening hammer-drill chuck|
    DE4411524A1|1994-04-02|1995-10-05|Roehm Guenter H|Drill chuck|
    DE4438991C5|1994-10-31|2009-07-30|Röhm Gmbh|chuck|
    CN1075971C|1995-10-05|2001-12-12|美国3M公司|Method and apparatus for knurling workpiece, method of molding articles with such workpiece, and such molded article|
    EP0785041B1|1996-01-17|2001-02-28|Röhm GmbH|Drill chuck|
    DE19782147B4|1996-12-04|2007-09-20|Power Tool Holders Inc., Wilmington|Chuck for use with manual or powered driver - has primary retaining mechanism in engagement with sleeve and body member to operatively prevent forward axial movement of sleeve with respect to body|
    US5988653A|1998-06-18|1999-11-23|Chum Power Machinery Corp.|Auto-locking bit holding system of a hand tool|
    CN2421112Y|2000-05-12|2001-02-28|西南交通大学|Clamp for sharpening drilling bit|
    DE10149959A1|2001-10-10|2003-04-17|Roehm Gmbh|Hole drilling device has dust outlet apertures with greater radial spacing from chuck axis than wall of machine casing facing chuck|
    FR2847180B1|2002-11-18|2005-02-11|Amyot Ets Sa|TOOL HOLDER MECHANISM WITH LATCHING SYSTEM|
    US7000926B1|2004-10-29|2006-02-21|Zhe Jiang San Ou Machinery Co.Ltd|Manually tightened drill chuck|
    DE102005012534B4|2005-02-14|2016-10-20|Röhm Gmbh|drilling|
    US7472913B2|2005-06-09|2009-01-06|Jacobs Chuck Manufacturing Company|Drill chuck|
    US7527273B2|2005-09-02|2009-05-05|Jacobs Chuck Manufacturing Company|Locking chuck|
    CN2882857Y|2006-04-17|2007-03-28|浙江三鸥机械股份有限公司|Improved manually fastening drill-chuck|
    CN101212876A|2006-12-29|2008-07-02|深圳富泰宏精密工业有限公司|Metal shell and its making method|
    JP5378056B2|2009-04-30|2013-12-25|ユキワ精工株式会社|Chuck device|
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    DE102010030433A1|2010-06-23|2011-12-29|Robert Bosch Gmbh|Hand tool with a striking mechanism|
    DE102011002331A1|2011-04-29|2012-10-31|Röhm Gmbh|drilling|ES2610053B2|2015-09-22|2019-11-27|Stryker Corp|KEYBOARD HOLDER WITH LOCK DEVICE|
    US10550553B1|2017-08-14|2020-02-04|Donzino Pankey|Adjustable handle device for use with a valve stem|
    USD878887S1|2018-03-09|2020-03-24|Milwaukee Electric Tool Corporation|Rotary power tool chuck|
    法律状态:
    2016-02-22| PLFP| Fee payment|Year of fee payment: 2 |
    2017-12-01| ST| Notification of lapse|Effective date: 20171031 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102014002969.7A|DE102014002969A1|2014-03-06|2014-03-06|chuck|
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